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80,028

80,028 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Abundant Number Evil Number Harshad / Niven Practical Number Recamán's Sequence Semiperfect Number

Properties

Parity
Even
Digit count
5
Digit sum
18
Digit product
0
Digital root
9
Palindrome
No
Bit width
17 bits
Reversed
82,008
Recamán's sequence
a(120,051) = 80,028
Square (n²)
6,404,480,784
Cube (n³)
512,537,788,181,952
Divisor count
60
σ(n) — sum of divisors
237,160
φ(n) — Euler's totient
23,328
Sum of prime factors
48

Primality

Prime factorization: 2 2 × 3 4 × 13 × 19

Nearest primes: 80,021 (−7) · 80,039 (+11)

Divisors & multiples

All divisors (60)
1 · 2 · 3 · 4 · 6 · 9 · 12 · 13 · 18 · 19 · 26 · 27 · 36 · 38 · 39 · 52 · 54 · 57 · 76 · 78 · 81 · 108 · 114 · 117 · 156 · 162 · 171 · 228 · 234 · 247 · 324 · 342 · 351 · 468 · 494 · 513 · 684 · 702 · 741 · 988 · 1026 · 1053 · 1404 · 1482 · 1539 · 2052 · 2106 · 2223 · 2964 · 3078 · 4212 · 4446 · 6156 · 6669 · 8892 · 13338 · 20007 · 26676 · 40014 (half) · 80028
Aliquot sum (sum of proper divisors): 157,132
Factor pairs (a × b = 80,028)
1 × 80028
2 × 40014
3 × 26676
4 × 20007
6 × 13338
9 × 8892
12 × 6669
13 × 6156
18 × 4446
19 × 4212
26 × 3078
27 × 2964
36 × 2223
38 × 2106
39 × 2052
52 × 1539
54 × 1482
57 × 1404
76 × 1053
78 × 1026
81 × 988
108 × 741
114 × 702
117 × 684
156 × 513
162 × 494
171 × 468
228 × 351
234 × 342
247 × 324
First multiples
80,028 · 160,056 (double) · 240,084 · 320,112 · 400,140 · 480,168 · 560,196 · 640,224 · 720,252 · 800,280

Sums & aliquot sequence

As consecutive integers: 26,675 + 26,676 + 26,677 10,000 + 10,001 + … + 10,007 8,888 + 8,889 + … + 8,896 6,150 + 6,151 + … + 6,162
Aliquot sequence: 80,028 157,132 120,684 166,596 222,156 448,164 709,356 945,836 719,884 654,524 613,204 473,420 520,804 390,610 402,542 287,554 151,034 — unresolved within range

Representations

In words
eighty thousand twenty-eight
Ordinal
80028th
Binary
10011100010011100
Octal
234234
Hexadecimal
0x1389C
Base64
ATic
One's complement
4,294,887,267 (32-bit)
In other bases
ternary (3) 11001210000
quaternary (4) 103202130
quinary (5) 10030103
senary (6) 1414300
septenary (7) 452214
nonary (9) 131700
undecimal (11) 55143
duodecimal (12) 3a390
tridecimal (13) 2a570
tetradecimal (14) 21244
pentadecimal (15) 18aa3

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵πκηʹ
Mayan (base 20)
𝋪·𝋠·𝋡·𝋨
Chinese
八萬零二十八
Chinese (financial)
捌萬零貳拾捌
In other modern scripts
Eastern Arabic ٨٠٠٢٨ Devanagari ८००२८ Bengali ৮০০২৮ Tamil ௮௦௦௨௮ Thai ๘๐๐๒๘ Tibetan ༨༠༠༢༨ Khmer ៨០០២៨ Lao ໘໐໐໒໘ Burmese ၈၀၀၂၈

Digit at this position in famous constants

π — Pi (π)
Digit 80,028 = 7
e — Euler's number (e)
Digit 80,028 = 7
φ — Golden ratio (φ)
Digit 80,028 = 0
√2 — Pythagoras's (√2)
Digit 80,028 = 6
ln 2 — Natural log of 2
Digit 80,028 = 5
γ — Euler-Mascheroni (γ)
Digit 80,028 = 2

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 80028, here are decompositions:

  • 7 + 80021 = 80028
  • 29 + 79999 = 80028
  • 31 + 79997 = 80028
  • 41 + 79987 = 80028
  • 61 + 79967 = 80028
  • 89 + 79939 = 80028
  • 127 + 79901 = 80028
  • 139 + 79889 = 80028

Showing the first eight; more decompositions exist.

Unicode codepoint
𓢜
Egyptian Hieroglyph-1389C
U+1389C
Other letter (Lo)

UTF-8 encoding: F0 93 A2 9C (4 bytes).

Hex color
#01389C
RGB(1, 56, 156)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.56.156.

Address
0.1.56.156
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.56.156

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 80028 first appears in π at position 124,766 of the decimal expansion (the 124,766ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.